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(No Model.) s sheetssheet 1. H. CLAUS. MACHINE EOE BRUSHING ENAMEL, &c.,DEE PLATES. No. 465,462.

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' H. CLAUS.

MACHINE EOE BRUSHING ENAMEL, &c., OPE PLATES.v

PatentedDec. 22,1891.

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(No Model.) 3 Sheets-Sheet 3. H. CLAUS. MACHINE FOR BRUSHING ENAMEL,61:0., OFP PLATES.

No. 465,462. Patented Dem- 22, 1891.

Q wlmessfsf l' lNITED STATES PATENT OFFICE.

AHUBERT CLAUS, OF Tl'IALE-IN-THE-I'IARZ, GERMANY.

MACHINE FOR BRUSHING ENAMEL, 80o., OFF PLATES.

SrnCFICATION forming part of Letters Patent No. 465,462, dated December2K2, 1891.

Application filed August 31, 1891. Serial No. 404,367. (No model.)

To all whom it may concern,.- i*

Be it known that I, HUBERMLAUS, of Thale-in-the-I-Iarz, Germany, haveinvented an Improved Machine for Brushing Enamel or other Matter Oft'Plates and the Like, of which the following is a specification,reference being had to the accompanying drawings, in which- Figure lrepresents a front view of my iinproved machine. Fig. 2 is anA` nlargedfront View, and Fig. 3 an enlarged side View, of the upper hanger forthe brush. Fig. 4. is a plan or top view of one end of the machine; Fig.5, an enlarged top view, partly in section, of the brush; Fig. 6, an endview of thebrush; Fig. 7, an end view of the machine; and Fig. `S, a topview, partly in section, of the upper hanger.

This invention relates to a new machine for brushing enamel or othermatter through stencils off metal plates or the like, being intended,mainly, to be used in the manufacture of enameled signs. Such signs arefirst covered over their entire surface with powdered enamel, and astencil is then placed upon them, covering those parts which are toremain enameled and uncovering the parts which are not to remainenameled. The uncovered parts are to be brushed out with the assistanceot my machine.

The invention consists of the novel arrangements and combinations ofparts that are hereinafter more fully described.-

The machineconsists of two main portionsto Wit, a lower portion forsupporting the plate to be brushed and an upper portion for supportingthe brush.

I will first describe the upper portion or brush-supporting contrivance.In suitable hangers a, (see Fig. 8,) which may be suspended from theceiling or other part of the room in which the machine is set up, arethe bearings of a shaft A. Upon this shaft is loosely hung a cone orother pulley b, which can be rotated by a belt d from the main drivingmachine or pulley B. (See Fig. 7.) A clutch e will when moved againstthe conepulley b throw the shaftA into action. From the ceiling or othersupport are also suspended hangers f, through which the shaft A passesloosely, and which hangers where they surround such shaft are madecylindrical to serve as bearings for rings g, that are part and parcelot' a swinging and weighted frame D-that isto say, the weighted trame D,having the rings g, is swiveled by means of said rings onto the blocksf, so that it will be capable of vibrating on the axis of the shaft A.The Weight 72, which is attached to one end ot' the frame D, has thetendency to depress that end and to lift the other end. The other or non-weighted end ot' the frame D carries two cheek-pieces i, which,together with the mechanism they embrace, constitutewhat I would callthe upper hanger for the brush. In these cheek-pieces is the pivotalsupport j of a universal joint 7c, that connects with the upper end ofan upright rod E. The lower end ot' the rod E connects by another jointZ with the frame F of the rotary brush G. The shields or cheek-pieces fialso carry friction-pulleys m, for purpof es to be hereinafter stated.The brush G is a cylindrical brush, and its shaft has pointed ends thatlie in bearings of the frame F, as clearly indicated in Fig. 5. Theshaft of this brush carries a little pulley n. Around this pulley passesa string-belt o, which runs over the friction-pulleys m and over a driving-pulley p, that is carried by the shaft A. All thesepulleys p, m,and u should be grooved, as shown. The brush-frame F has handles r, byvmeans of which it can be conveniently grasped and manipulated. The saidbrushframe is also provided with two bearing-rollers s s, which arepressed upon the stencil H by springs t, but which are capable ofyielding to the downward pressure given to the brush by the operatorwhen he has hold of the handles r. These little rollers s sshould bemade of elastic material, and are intended to press on the stencil IIbefore the brush reaches the saine, so that any displacement Aof thestencil or bendingthereof by the brush or its action will be avoided.The intention is that the operator at the proper time shall take hold ofthe handles r and force the brush down upon the stencil, which lies onthe plate I, that is covered with the powdered enamel, and then tomanipulate the brush, which is meanwhile being rotated, by means of thebelt o, so that it will brush through the openings of the stencil andremove all the enamel that is exposed. As soon as the attendant lets goIOO of the brush the weight 7iy tilts the frame D until the cheek-piecest' strike a suitable abutment u. (See Fig. 7.) By means of the universaljoint 7e and joint Z -tlie brush can be manipulated in every vdirectionand caused to perform its functions, Whetherheld longitudinally with theunderlying plate or transversely thereto, the joint Z being particularlyuseful in enabling the operator to hold the entire length of the brushon the stencil.

I Will now describe the lower, part of the machine, which needs simplyto be a table on which the platelto be brushed lies, said plate I beingcovered by the stencil H. An ordinary table Will answer for smallarticles,

signs, and the like, Whereas for larger plates l prefer to make thetable, as in the drawings, of an endless apron J, moving over suitablesprocket-Wheels L M and serving as .a support for the plate to bebrushed. A pedal'or lever mechanism N for giving a short turn toone ofthe sprocket-Wheels can be supplied,

-so that the operator can by means of said mechanism slightly advancethe plate to be brushed from time to time.

Having noW described the general construction of my machine, I willbriefly state hoW it operates. The attendant puts the plate I to bebrushed on the table, places a stencil onto it, andv clasps it properlythereto. He then throws the clutch c so as to bring the pulley b andshaft A into rotary motion. This causes the brush G to revolve. He nowtakes hold of the handles of the brush-frame, presses the brush downupon the stencil, and while the brush revolves moves the same over thestencil in all sorts of directions until the interstices of the stencilhave been thoroughly brushed out. If the plate is so large that theattendant cannot at one operation reach all its parts, he lets go thebrush, which iinmediately by means of the Weight h ascends and by themechanism N or analogous means advances the plate the desired distance.

then takes hold of the brush again, brushes out the newr portion of theplate brought within its compass, dac., until the v'vork has beencompleted.

In order to protect the Workman from injurious effect of dust'arisingfrom the operation, the brush may be inclosed to a greater or lessextent in a suitable metallicshield.

The invention is applicable, as heretofore stated, to the brushing ofdry powdered enamel off the surface of plates, but may also be used forbrushing other things off plates or other surfaces, and the surfaces tobe brushed maybe flat as a plate, or may bein relief, or of any otherdesired form.

What, im, and desire to secure by Letters Patent, is-

l. The combination, with a table adapted to hold the article to bebrushed, of the brush G, its'brush-frame F, joint Z, rod e, universaljoint la, swivel-frame D, main shaft A, and mechanism for impartingrotary motion to said brush from the shaft A, all as hereinbeforespecified..

2. The bruiii-fraine F, carrying the rotary brush G, combined with thespring-pressed sidc rollers s s, substantially as and for the purposespecified.

3. The combination of the stationary hangers a and f with the shaft A,which is supported in the hangers a, but passes loosely through l(hehangers f, and with the swivelframe D, having rings g, that embrace thehangers f, said swivel-frame D having Weight 'h at one end and universaljoint k at the other end, and with the i'od E, joint Z, brushframe F,brush G, and means, substantially as described, for imparting rotarymotion from the shaft A to the brush G, all as specified.

HUBERT CLAUS.

Witnesses:

G. WESEMYER, W. EGGELING.

